Sub-casing-head take-off for wells



Sept. 30, 1941.

W. H. BRENOT SUB-CASING-HEAD TAKE-OFF FOR WELLS Filed Sept.. 3, v1940 Patented Sept. 30, 1941 UNITED STATES PATENT OFFICE Y .2,257,25k l SUB-CASING-HEAD TAKE-OFF Foa WELLS William H. Brenot, Toledo, Ohio Appiieaiionvseptember s, 1940, serial No. 355,191

2 Claims.

This invention relates to take-off device for pumping installations.

This invention has utility when incorporated as a take-off below the frost lnefrom the casing of a water well with the pump head thereabove in normal position as to the casing.

Referring to the drawing:

Fig. 1 is a side elevation, with parts broken away, of a pumping head for a water well having adaptation showing the take-oit herein for a pressure water discharge line from an intermediate chamber;

Fig. 2 is a section on the line IIII, Fig. l, showing the take-off connection from this intermediate chamber;

Fig. 3 is a section on the line III-III, Fig. 2, showing the chamber which is effective for supplying the take-ofi; and

Fig. 4 is a section on the line IV-IV, Fig. 3, showing details of the partition-providing means and duct communications for this take-oi chamber.

From ground line I there may be casing 2 extending into a water Well. In this casing under the region of the rise of the water there is located Water intake device 3 with pump 4 in tubing or pipe 5. This pipe 5 surrounds pump rod 6. For operating this pump 4 through this pump rod 6 there may be mounted at casing head 'I power jack device 8 operable by motor 9. This casing head 'I in normal practice would have outlet I0.

In many regions it may not be desirable to eiect the liquid lift, say water, to the surface of the ground I. In the climates where there is freezing or cold seasons it is important that in Water wells there be no out off of this water supply. Accordingly, importance arises to have the water take-off below the frost line. This is effected economically herein with the retention of the normal casing 2. It is only necessary to determine the drop distance which it is desired to have for the take-off, and with such determination, in lieu of continuous pump rod 6 from the pump 4 there may be portion II from the casing head 'I to have threaded terminus I2 to coupling I3. This coupling I3 is to threaded portion I4 (Fig. 4) of the pump rod 6 through collars I5 and gasket cups I5 located in tubing extension II having taper thread connection I8 from terminus I9 of pipe 20 having threaded connection 2| with collar 22. This collar 22 has additional internally threaded portion 23 into which the pipe 5 from the pump 4 may be threaded. There is thus provided a guide for the pump rod 6 in its ascent from the pump 4.`

The collar 22 has, on the side away from the pump 4, a radially extending face 24 against which may be located compressible disk 25 of a substance to resist the character of liquid to be handled. In the instance such be a water well this may be of rubber. Opposing this flat face 24 on the opposite side of this self-sealing .disk or packing 25 is collar 26 having convex face 2'I which, as thrust against the compressible disk 25, has a tendency to cause such disk to expand in effecting more efcient packing against the inner side of the casing 2. Complementary to this flange-providing collar 26 and spaced therefrom by tube or cylindrical pipe section 28 is collar29 also having convex face 30 against compressible. disk 3| similar to the disk 25. On the side of this disk 3) away from the disk 25 is packing collar 32 having internally threaded portion 33 to provide mounting or carrying connection for the unit herein from pipe 34 as having connection 35 with the casing head 'I. In the set-up herein as locating the pair of expansible disks or packing 25, 3 I,

- in the position desired for locating chamber 36,

access is had between the pipe 34 and about the pump rod I I with a wrench or tool to engage notches 3'I in nut 38 having coaction with cylindrical portion of the thread portion 39 on the pipe 25. This means there is positive thrusting of the collar 32 toward the collar 22 effecting expansive action in compressing the disks 25, 3|, into self-sealing partitions in the casing 2 for isolating the chamber 36.

Having effected the self-sealing for this unit as to the chamber 36 at the desired spacing below the frost line 4i), there may be just necessary slightexcavation effected from the surface I along a side of the casing 2, and at such point tap 4I effected through the casing 2 into the chamber 35. Additionally, tap 42 (Fig. 1) is into the casing above the packing disk 3l and tapv 43 below the packing disk 25.y Into these tWo taps 42, 43, may be thrust duct 44 which serves as an effective bypass, whereby from tap 45 (Fig. 3) in the pipe 34 any water seepage past the cups I6 may spill from chamber 46 in the pipe 34 to chamber 4'I in the casing 2 above the chamber 36 and from thence drain by the duct 44 to chamber 48 below the partition 25. 'Ihis is also effective brake for suction or vacuum disturbance in any operation of the pump 4.

In the functioning of the pump head 8 in operating the pump rod, the lift of the liquid as Water through the pipe 5 passes through the collar 22 into the pipe section 20. It may not ascend past the collars I5 and cups I6 at the threaded portion I4 ofthe pump rod 6. From this pipe 20 there is a lateral opening or port 49 that this liquid or water may spill into chamber 50 about this pipe 20 and from thence through port 5| in the spacer pipe section 28 into chamber 36. From there it may discharge through the tap 4|. This tap 4I (Fig. 2) is effectively sealed, say by gasket 52 Yheld by yoke 53, with U-bolt 54 about the casing 2. This U- bolt 54 is anchored'withthe yoke 53 bynuts 55. One of the legs Yof this U-bolt 54 may carry washer -56 having hook terminus 51 as a clamp for engaging the duct 44 and holding such in locking position with the casing 2. This 'yoke 53 has internally-tapped portion' 58,fromwhic`h Vpartitions'VV 25,431, is-fthus one of direct communieation-'to-theltake-off pipe Y59- in the-ascent-of water from the submerged' Apump it, with k'such take-oi'for-water down'in 'theL casing 2 below-the frost line;l :'Forlanylattentionto the parts herei-'rr,;'i't' is vonly necessaryE tprernove the casing head 1f, then throughthepip'e *35* operate the wrench to'cooperate'withtlienotchest to-ba'ck ol the nut 38 fasto the-"cylindrical" threads 39j. A'There i's" thus lairel'ease of the Jclanipirtgaction which tendstos'expand the partiti-ons *25, "3l, vari-'d-"tltfe unit' may be brought'tothe surface for `aintention toi'the unit or attention toY theV pump" 4f as* the ccasionvrnay require; y

Inisonie" instances therev inayloe omissions of the' ductsorl bypass "44 to communicate between' the opposite sides' 'of` the' unit; that is, forl 'communication between' re'mote'sides of' the* partitions. :In such f instances, when 'there is other'` occasion fior' ains'upply into"the"'c'lis'nn'ber43,A such airin'ay be'entrainedinf the pumping' sys'teinin such''a way that' in the' hydropneuinatic set-up it'inay bie a supply ot'air A'suicient for` maintenance ofl thepressure. n .Y A

In otherV instances wherein'there' isdesirability yforestat-1minng the unit as such," in; lieu' 'orAv the bypass 14A-"exterior cfthe casing "2,- duetto registersinV v"sniall'"openings" through the collartfoornpressibl'e member 3L collar 29, with" its' inter'niediateyieldable loop portiorE l ,I thence'on" through oollar, diskpackin'g ''and' throii'gh'the collar 22. vThe compressih'gfactioncauses thedi'sk' 25,tlyto operate as an 'iective'seal'in holding" this 'duct Jtra' with the cilars" and this provides the' bypass between the "chamber M 'and the chamber 48 and clear of the intermediate charnber 36.

What is claimed and it is desired to secure by Letters Patent is:

1. A casing provided witha conductor for liquid, a unit insertable in the casing to a station intermediate the length of the casing, said unit including a plurality of spaced partitions, a laterally ported pipe section, a pair of collars spaced by the' pipe section and' providing seats for a pair of said partitions, an additional pipethrough the spacer pipe section, a third collar having threaded engagement with the additional pipe and thereby opposing the lower partition on the side away'from'thecollar against the lower side of the pipe section, a fourth collar loose on the additional pipe above the upper partition, and a nut havngthreaded engagement with the additional pipe and seating against thefourth collar,

said nutr as there rotatable being eiec-tiveV cation-with the pumplfor liquid delivery through the-additional pipe into the chamberv for effecting delivery of liquid from the casing by way of the chamber and port means.

2. A oasingip'rovided with" a conductor for liquid, `a- 'unit in'sertable in the casing to a .station intermediate the length of the casi-ng, said unity including -a'plurality of spaced. partitions, aj lat- Y erally ported pipel section,a pair of collarsspaoed by the pipe section and providing 'seats for a pair of said partitions,` anfadditionalpip'e through-the spacer pipe section, Vthird collar having threaded' engagement with the `Vaddition-al Apipe 'and thereby opposing the lower partition on the siaiefY away froinfthe collaragainstthe lowerside =of theV pipeseetionfa fourth collar loose' on the additional pipe-abovel the' upper partition; an'da'nut having'thre'adedf `engagenfient with the 'ad-ditional pipe and'seatingiagainst the fourtncollar, said# n'ut'as there rotatable" being effectiver through the'v pipesimuitaneou'slyto clamp a'pairof the partitions with theseat-providmg'coll'ars against'tire ported pipe section'for such space'd'pairv of" the partitions" to cooperate the'pasing" to" formH a chan'ilier'in1 thecasing, there vbeing 'porteproviding'nieans through the casing" from said chamberg'a/pump; a riser pipe inthev Acasing totheA unit, and "a "pump VrodV throughA the additional pipe and riser vfor liquid'd'eliverythrough'the additional' .pipe alfdportd pipe Section nto"tlie chamber for liquid discharge from the Hcna-Inter byway of the port' means through the-casing- WILLJAM H. BRENGT. 

